Pump



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.z k \N \NMQNS A. w. m m WNW ml a m H Sept. 28,1926. 1'',600,"9'9o S. A. NE lDICH PUMP Filed June 23. 1925 2 Sheets-Sheet 2 I/VVL'IVTOR: J Jam/EL l1. Wig/cu, m I 5 l atented Sept 28,1926.

ease FEE.

PUMP.

Application filed me 23, last? Saar 1a; 39,1591

My inventionis particularly'desigried and adapted to force viscose (cellulose sulpho carbonate or thiocarbonate) through spin nerets to extrude filaments of; viscose into a medium which Will coagulate it, to form impure cellulose hydrate, which may be progressively dried to ultimately form artificial hair or silk.

The form of my invention hereinafter 'descirbed, is conveniently employed in the manufacture of artificial horse hair, and, in such embodiment, each pump is of such capacity as to supply the viscose forproduction of asingle such filament. However, a plurality of such pumps is connected to a common actuating mechanism whereby all the pumps may be simultaneously. operated, but each may be adjustably. variably operated. q I

Such pumps are of the reciprocatorypistontype and their individual capacity is so small that it was found practically impossible to control the same,without leakage, by any ordinary pump valve. Therefore, an advantageous feature of my invention is the specific form of rotary valve used incombination with each pump piston; whereby all leakage and consequent waste of pump action is eliminated. In such embodiment of my invention, all of the pump pistons and their respective valves are arranged to be actuated, in coordinated relation, by the single operating mechanism aforesaid. Another distinctive feature of the embodiment of my invention herein illustrated is that the reciprocatory action of' the pump piston which tends to produce a pulsating and consequen'tly fluctuating pressure upon the liquid supplied through the pump is regulated and transformed to'a substantially uniform pressure upon the liquid at the discharge side ofeach pump by providing a reservoir at that side of each pump, wherein a substantialbody of the discharged liquid may be continually maintained under'pressure of a body ofair trapped in the reservoir. A further distinctive feature of my invention is that each such reservoir is formed of a transparent glass bottle-s0 as to exhibit to the operator the viscose discharged from the pump beforeit is tlflllSllllttfiCl to the spinneret; so that the condition of the liquid is continually subject to visual inspection by the operator.

My invention includes the various novel rig. V 1s a fragmentary vertical, transverse sectional view of saidpui'rip, taken on the line V, V inFigs. I and II.

F 1g. VI a fragmentary plan view of filament forming apparatus including aplurality of three pumps such as shown in l l gs. to V inclusive, connected with operating mechanism common to all of them.

Fig. VII is a side elevation of the apparatus shown in Fig. VI. v

Referring to Figs, I to V inclusive; the pump casing 1 is providedwith' base flanges 2;.having bolt holes 3,. whereby! it may be r gidly connected with a' suitable support, as hereinafterdescribed As best shown, in III said casing 1 is provided witha cylindrical bore 5 extending longitudinally therethrough, conveniently of are same diameter throughout its length. The right hand portion ofsaid bore 5 as seen inFig. III,'forms a pump piston chamber in which the cylindrical plunger piston 6 is mounted to reciprocate, through the p'ackingring 7 held by the stufling boas. The left'hand end of said bore 5, as shown in Fig. III, forms a'valve chamber in,which the valve 10, which a straight cylin der of uniform diameten is mounted to oscillate, through an arc of 180. Said valve 10 is held in said pump casing 1, against the pressure of the liquid discharged by saidpiston 6, by the yoke plate 11 which fits in the. annular groove 1 2 encircling saidvalve 10, and is rigidly connected with said casing'l by the screw 12, best shown in III.

The chamber in said pump casing 1 in which said valve 10 is thus mounted to turn one half revolution, provided with the inlet-port 15,2.t'11l16 bottom thereof, inconnection with the viscose supply p 16 i h s eje e etl i e d t- 1' id casingl by the screw thread 17 Saidvalve chamber is also provided with the outlet port 19. diametrically opposite to said inlet port 15; so that the port 20 in said valve 10 may be alternately presented in registry with said inlet port 15 and outlet port 19 in said pump casing 1 as said valve is oscillated through an arc of 180.

Said outlet port- 19 in said pump casing l is provided with the dischar e pipe 22 leading into the reservoir chamber 23 conveniently formed by the transparent glass bottle 24; which is detachably secured in liquid-tight relation with its seat 25 in said casing 1. by the set screw 26. As best shown in Fig. 11, said set screw 26 is in screw threaded engagement with the cross barQT, held in predetermined relation with said pump casing 1, by the vertical screw rods 28 and 29. As indicated in Figs. I and H; said cross bar 27 is pivotally connected with said rod 28 upon which it may be swung out of engagement with said rod 29, which is released through the notch 30 in said cross bar, when said screw 26 is retracted. to permit said bottle 24 to be removed and replaced with respect to its seat As indicated in Figs. 11, IV and V; a discharge duct is formed in said casing 1, comprising the drilled holes 32, 33 and leading. at the bottom of said seat 25, from said reservoir chamber 23 to the filter seat 35 in said casing. The filter shell 37. having the screw thread 38, is detachably fitted in said seat 35, and is provided with the delivery pipe 39. tl rough which the vis cose is delivered to the spinneret .0. Said filter shell 37 incloses a suitable filtering material adapted to eliminate particles of solid matter occluded in the viscose, so that such particles are prevented from clogging the jet orifices of said spinneret 4t).

I find it convenient to reciprocate said pump piston (3 by connecting the same, by the pivot -11, with the arm 42 of the lever -13 which is fulcrumed at 4.4. upon the lug which is a unitary projection from said pump casing 1. 1. also find it convenient to provide said valve 10 with the gear pin ion 46, which is rigidly connected therewith, so that said valve may be turned, through an arc of 180, as above described.

Of course, said pump lever 43 and valve pinion 46 may be coordinately operated by any convenient means. However in the form of my invention shown in Figs. VI and VII a plurality of pump casings 1 are mounted upon suit-able supports 4-? above and in rigid relation with the tank 48 which contains a liquid coagulating medium 19 for the viscose filaments projected therein through said spinnerets 40.

Each of the three valve gear pinions 46 indicated in Figs. VI and VII is arranged to be turned by engagement with respective toothed racks 50 which are all rigidly connected with the slide bar 51, which latter is mounted to reciprocate longitudinally with respect to said tank as, Said bar 51 is reciprocated to turn each of said valve gears 46 one half revolution, back and forth, in proper time, by means including the link 52 which is pivoted at 54 to said bar 51 and has the slot 56 engaging the crank pin 57 on the crank disk 58. Said disk is rigidly connected with the crank shaft (30 journaled in suitable bearings 61 and provided with the pulley (32 for engagement with the driv ing belt 63.

Each of the three pump levers 13, cated in Fig. V1, is arranged to be oscillated, in proper time, by respective studs 65 which are rigidly connected with the slide bar 66 which is mounted to reciprocate at the top of said tank 48 with said studs in engagement with the respective levers 43 which are held against the studs by respective springs 68 extending from said levers -13 to stationary eye bolts (39 in the stationary angle bar 70. The effect of said springs 68 is to retract the pump pistons (i from their respective casings 1; and the extent of such retraction is adjustably determined by respective set screws 71 which are in screw threaded engagement with lugs 72 projecting from said angle bar 68 as shown in Fig. VI. Such construction and arrange ment enable the operator to precisely predetermine and individually vary the volume of viscose which is progressed by the pump pistons 6 at each stroke thereof. Such studs 65 are arranged to shift the pump levers 13 so as to thrust said pistons (3 inwardly simultaneously to the same limit: the variation in the piston stroke being effected at the outer end thereof. However. I lind it desirable to reciprocate said slide bar (36 by means which are adjustable to vary the stroke of said bar and thus adjustably vary the strokes of said pistons (3 at the inner end thereof. Such means includes the coupling 75 to which said bar 66 is connected by the pivot 76 and which is carried by the lever 78 fulcrumed at 75) on the stationary bracket 80; said coupling 75 being radially adjustable toward and away from said fulcrum 79 of said lever 78. by the adjusting screw 82 which is in screw threaded engagement with the lug 83 of said coupling and is arranged to be held in adjusted position by the nut 85 en gaging the arm 86 on said lever 78. Said lever 78 has the slot 88 engaging the crank 89 which is carried by said shaft (30. Of course, the stroke of said slide bar (56 may be increased by lowering said coupling 75 on said lever 78, and vice versa.

The operation of the pumps as above described continually subjects the viscose in the reservoir chambers 23 to such pressure as to project the same through the respective indispinnerets 4:0 in the form of respective extruded filaments 91 which are primarily and progressively coagulated by submersion in said coagulating liquid 49, from which they may be withdrawn, at the opposite end of the tank 48, not shown, by any suitable means, for instance a roller over which each filament extends and by which it is frictionally engaged and progressed. However, the means for manipulating such filaments are the subject matter of other applications for Letters Patent of the United States.

Although I have found the specific construction and arrangement herein described convenient for effecting the coordinate operation of the pump pistons 6 and valves 10; I do not desire to limit myself to the precise details of construction and arrangement herein set forth, as it is obvious that various modifications may be made therein without departing from the essential features of my invention as defined in the appended claims.

I claim:

1. In a viscose pump; the combination with a casing having a cylindrical tubular bore extending entirely therethrough, form'- ing a piston chamber at one end and a valve chamber at the other end of said casing; said casing having a reservoir seat and a filter seat, a viscose inlet and a viscose discharge outlet, said inlet and outlet being respectively in communication with said valve chamber upon opposite sides thereof, said discharge outlet opening into said reservoir seat, and a duct leading from the base of said reservoir seat to the base of said filter seat; of a glass reservoir fitted to said reservoir seat; a filter connected with said filter seat; a piston plunger fitted to reciprocate. in said bore; a lever fulcrumed in connection with said casing and pivotally connected to the outer end of'said piston; a rotary cylindrical valve fitted in said bore, and having a port opening in its circumference,

in communication with the interior of said.

bore and adapted to alternately register with said inlet and said outlet when said valve is turned; means on the outer end of said valve whereby it may be turned, including a gear pinion; means preventing axial displacement of said valve; and means arranged to reciprocate said pump piston and oscillate said valve to alternately register with said inlet and outlet, in coordinate relation with said piston movement.

in a pump; the combination with a casing having a cylindrical tubular bore extending entirely therethrough, forming a piston chamber at one end and a valve chamber at the other end of said casing; said casing having a viscose inlet and a viscose discharge outlet respectively in communication with said valve chamber upon opposite sides thereof; a piston plunger fitted to reciprocate in said bore; a stuifing box surrounding said piston in engagement with said casing; a rotary cylindrical valve fitted in said bore, and having an annular recess exterior to said casing, and a port opening in its circumference, in communication with the interior of said bore and adapted to alternately register with said inlet and said outlet when said valve is turned; means on the outer end of said valve whereby it may be turned; means preventing axial displacement of said valve, including a yoke plate fitted in said recess in rigid relation with said casing; and means arranged to reciprocate said pump piston and oscillate said valve to alternately register With said inlet and outlet, in coordinate relation with said piston movement.

3. In a viscose pump; the combination with a casing having a cylindrical tubular bore extending entirely therethrough, forming a piston chamber at one end and a valve chamber at the other end of said casing; said casing having a viscose inlet and a viscose discharge outlet respectively in communication with said valve chamber upon diametrically opposite sides thereof, said outlet opening into a reservoir seat; a glass bottle reservoir having its neck fitted in said seat; means arranged to detachably secure said reservoir in its seat; a piston plunger fitted to reciprocate in said bore; a stufiing box surrounding said piston in engagement with said casing; a rotary cylindrical valve fitted in said bore and having a port opening in its circumference in communication with the interior of said bore and adapted to alternately register with said inlet and said outlet when said valve is turned; means preventing axial displacement of said valve; means arranged to reciprocate said pump piston and oscillate said valve to alternately register with said inlet and outlet in coordinate relation with said piston movement; wherebv viscose is discharged. into said reservoir against an air cushion in the latter; and a spinneret in communication with said reservoir; whereby viscose is extruded through said spinneret by the air pressure in said reservoir maintained by the operation of said pump.

In testimony whereof, I have hereunto signed my name at Burlington, New Jersey, this 19th day of June, 1925.

SAMUEL A. NEIDICH. 

